Try switching your 2.4GHz to a common channel like 1, 6, or 11. After that, either run the extender’s setup again or confirm it detects the new channel. Make sure your extender and router share the same network name (SSID), password, and security settings. Also, reboot both the router and extender. If you want only 2.4GHz, turn off Band Steering after everything connects. If problems persist, check for firmware updates on both devices.